private static void ExtractModelDataForObj(
MyModel model,
Matrix matrix,
List<Vector3> vertices,
List<TriangleWithMaterial> triangles,
List<Vector2> uvs,
ref Vector2 offsetUV,
Dictionary<string, MyExportModel.Material> materials,
ref int currVerticesCount,
Vector3 colorMaskHSV)
{
if (false == model.HasUV)
{
model.LoadUV = true;
model.UnloadData();
model.LoadData();
}
MyExportModel renderModel = new MyExportModel(model);
int modelVerticesCount = renderModel.GetVerticesCount();
List<HalfVector2> modelUVs = GetUVsForModel(renderModel, modelVerticesCount);
Debug.Assert(modelUVs.Count == modelVerticesCount, "wrong UVs for model");
if (modelUVs.Count != modelVerticesCount)
{
return;
}
//we need new material for every HSV and texture combination, therefore we need to create new materials for each model
List<MyExportModel.Material> newModelMaterials = CreateMaterialsForModel(materials, colorMaskHSV, renderModel);
for (int i = 0; i < modelVerticesCount; ++i)
{
vertices.Add(Vector3.Transform(model.GetVertex(i), matrix));
Vector2 localUV = modelUVs[i].ToVector2()/model.PatternScale + offsetUV;
uvs.Add(new Vector2(localUV.X, -localUV.Y));
}
for (int i = 0; i < renderModel.GetTrianglesCount(); ++i)
{
int matID = -1;
for (int j = 0; j < newModelMaterials.Count; ++j)
{
if (i <= newModelMaterials[j].LastTri)
{
matID = j;
break;
}
}
Debug.Assert(matID != -1, "Triangle with no material");
var t = renderModel.GetTriangle(i);
string materialName = "EmptyMaterial";
if (matID != -1)
{
materialName = newModelMaterials[matID].Name;
}
triangles.Add(new TriangleWithMaterial()
{
triangle = new MyTriangleVertexIndices(t.I0 + 1 + currVerticesCount, t.I1 + 1 + currVerticesCount, t.I2 + 1 + currVerticesCount),
material = materialName,
});
}
currVerticesCount += modelVerticesCount;
}
public MyExportModel(MyModel model)
{
m_model = model;
m_model.LoadData();
ExtractMaterialsFromModel();
}
public void Init(MyModel model, Matrix matrix)
{
Model = model;
InstanceData.LocalMatrix = matrix;
model.LoadData();
}
